High uniformity metal detector equipped with auxiliary receiver

Communications: electrical – Condition responsive indicating system – Specific condition

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Details

340572, 324239, G08B 1326

Patent

active

054062594

ABSTRACT:
A perfected metal detector for passageways, equipped with transmitter-recer Tx-Rx windings connected, using suitable amplifiers A and D, to an Analysis and Control Logic Unit LAC where the signals are compared; and also equipped with at least one corrective receiver winding CC on each side of a supervised passage used to supply information to the LAC unit about metal bodies in transit along paths close to it, with the aim of rendering uniform the interceptive sensivity throughout the transit area, even when more than one metal body is in simultaneous transit.

REFERENCES:
patent: 3758849 (1973-09-01), Susman et al.
patent: 3764860 (1973-10-01), Scheda
patent: 4075553 (1978-02-01), Bouverot et al.
patent: 4274090 (1981-06-01), Cooper
patent: 4779048 (1988-10-01), Aichele
patent: 4949037 (1990-08-01), Abe

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